Zimbra Groupware

Zimbra is a groupware system that provides email, calendaring, integrated antivirus and spam filtering, and more for multiple domains. Available in several editions, these guides will help you get the Open Source Edition installed on your Linode.

What is Zimbra? - Quora

Export User List from Zimbra into a CSV File - Diadem Technologies : Support Knowledgebase

Zimbra - Alternative E-Mail Lösung. - ETES GmbH

ISCZimb Integrating SugarCRM with Zimbra groupware

Choosing Zimbra for Collaboration Excellence

Install Zimbra Open Source Edition on Ubuntu 14.04

Vmware Zimbra - The open source messaging alternative to Google Apps and MS Exchange

5 Awesome Open Source Groupware Software Suite - nixCraft

Groupware Zimbra Server : OPEN NETworld GmbH

CentOS 6 - Zimbra - Setup : Server World

Zimbra Tips: Use Briefcase as Remote Drive

Secure Private Business Email & Collaboration, Open Source